Earlier while playing Sims3 I noticed I couldn't use more than one accessory on my outfit, and since I have tattoos that I use as accessories, I couldn't use leggings or anything since they would get replaced by each other.
Also, I noticed the same for eyeshadow.

Is there any mod that allows me to select more accessories and such or is this against game mechanics and not possible?

Thank you all for reading and in advance for any help. :lovestruc

MasterController can do it! Along with a million other things, too.
http://nraas.wikispaces.com/MasterController

You'll need to select your sim, go to "Nraas -> MasterController -> Settings" and then there should be an option to allow multiple accessories and makeup per location (though it doesn't work for costume makeup). Then you can go to Change Appearance/Plan Outfit and add the extra accessories and makeup.

Oh, funny thing is I have this haha~
Okay, thank you hun! <3

Great thaks !

There are a lot of links for download, which one is to wear multiple accessories?

If you do not already have Master Controller mod, you'll need to base-mod one. This is..the base
Go for the version that correspond to your patch version.
If you are fully patched, then you'll need the 1.67 one. If like me, you refuse to patch to last version..then download the 1.63 version, or any..according to your patch level.

Then, just follow instructions that Legislacerator posted .

Yes, having multiple accessories in one place does work in MasterController, even if AwesomeMod is installed. However, the same can't be said for the texture quality of those accessories:

I don't get it. This never happened in The Sims 2, so why must it happen in The Sims 3? Are all of the textures on a sim saved as one giant texture or something?

Whenever I use multiple accessories (which is about 9/10 times), the texture stays the same. I can combine whatever I want, without the quality changing. Are you sure it's not a piece of CC that's causing it?

http://sims3.modish-kitten.net/post/86790619874-Kimono
http://www.modthesims.info/download.php?t=400156-Cigar
http://irinkakic.blogspot.com/2011/...-with-hood.html-Cloak
http://www.modthesims.info/download.php?t=352527-Stockings
Test these together and let me know what happens. As for the girl herself, she is a bad girl, but is also rich and a witch.

I'm in-game right now, so I can't test. But I'm not sure what exactly we would we accomplish if I did...?

I don't have that option It is replaced for me with multiple tattoos. Am I doing something wrong?

You should look for the options:
Nraas / Master Controller / Settings / CAS / Multiple Accessories per Location
Nraas / Master Controller / Settings / CAS / Multiple Makeup per Location

Both are set to False by default, you will need to enable them yourself.
You also have two more options that you can enable (also disabled by default):

Nraas / Master Controller / Settings / CAS / EyeColor by Category
Nraas / Master Controller / Settings / CAS / Hair Color by Outfit

This didn't work for me. What do?

This is a really old thread but here's a couple of tips:

For Multiple Accessories the Master Controller Integration Module is needed.
For more information see The MC Interactions Page Under CAS

If you need further help with MC please post over at NRaas In Chatterbox. If you're not registered instructions are in the link I provided. It's quick and easy.